Switchable stimulated Raman scattering microscopy with photochromic vibrational probes

Jianpeng Ao, Xiaofeng Fang, Xianchong Miao, Jiwei Ling, Hyunchul Kang, Sungnam Park, Changfeng Wu () and Minbiao Ji ()
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Jianpeng Ao: Fudan University
Xiaofeng Fang: Southern University of Science and Technology
Xianchong Miao: Fudan University
Jiwei Ling: Fudan University
Hyunchul Kang: Korea University
Sungnam Park: Korea University
Changfeng Wu: Southern University of Science and Technology
Minbiao Ji: Fudan University

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract Photochromic probes with reversible fluorescence have revolutionized the fields of single molecule spectroscopy and super-resolution microscopy, but lack sufficient chemical specificity. In contrast, Raman probes with stimulated Raman scattering (SRS) microscopy provides superb chemical resolution for super-multiplexed imaging, but are relatively inert. Here we report vibrational photochromism by engineering alkyne tagged diarylethene to realize photo-switchable SRS imaging. The narrow Raman peak of the alkyne group shifts reversibly upon photoisomerization of the conjugated diarylethene when irradiated by ultraviolet (UV) or visible light, yielding “on” or “off” SRS images taken at the photoactive Raman frequency. We demonstrated photo-rewritable patterning and encryption on thin films, painting/erasing of cells with labelled alkyne-diarylethene, as well as pulse-chase experiments of mitochondria diffusion in living cells. The design principle provides potentials for super-resolution microscopy, optical memories and switches with vibrational specificity.

Date: 2021
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DOI: 10.1038/s41467-021-23407-2

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